Bronze Hex Bolts
651 Silicon Bronze Hex Cap Screw
Silicon Bronze Head Head Bolts
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Silicon Bronze Hex Cap Screws / Tap Bolts

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Our solid 651 silicon bronze hex cap screws, often referred to as hex head bolts or tap bolts, are a solid bronze alloy, specifically CS65100 silicon bronze. All of our hex cap screws are fully threaded with a standard imperial coarse thread, and meet SAE specifications as well as ASME B18.2.1 with grade markings on the heads.

Non-magnetic, electrically conductive, high strength, and extremely corrosion resistant properties make these solid bronze hex bolts excellent for a variety of uses including:

  • Use on a boat where corrosion resistance from seawater is paramount
  • Use in electrical generation or in the power and energy industry for their highly conductive, high strength, and corrosion resistance
  • In general construction, where proximity to salt spray or other corrosive environments is of concern
  • Use in water treatment plants, where they will resist corrosion from chlorine or other treatment chemicals
  • Use in electrical grounding
  • Use on dams, dikes, and levies where they won't corrode and are easily removed years down the line.

Put the exact quantity you'd like to order in the "Quantity" box above and your quantity discount will be automatically applied during checkout.

Don't forget to add your bronze nuts and washers!

Customer Reviews

Based on 22 reviews
Richard Z.
quick, precise, except

My order from Fair Wind Fasteners was delivered quickly and contained the proper fasteners and in correct number, the only snafu being the 5/16"-18 X 3-1/2" hex cap bolt was delivered a 5/16"-18 X 3-1/2" lag bolt. But other than this small error which fortunately was not a problem in the application I was using, the order was exactly what I ordered and of high quality in both, delivery and material.

Walter Quintanilla

Silicon Bronze Hex Cap Screws / Tap Bolts

Outstanding Quality

Just what I needed in hard to find quality silicon bronze boat fasteners, received in a timely fashion.

Ed Blakeslee
Excellent resource

Very satisfied with the quality of the fasteners
Would order again with confidence

Mark Nelson
On hand and high quality

I’m in the midst of a major refit of my Cape Dory 40, and sourcing parts is more work than it used to be. However, Fair Wind has had all the assorted bronze fasteners that I’ve needed, on hand, and ready to deliver, and in the quantities that I needed. Thanks for the excellent, prompt service.